Door-latch.



A. TREMBLAY.

DOOR LATCH. APP 11111111111111111111111 o.

Patented June 13, 1911.

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DOOR LATCH.

APPLICATION FILED JULY 1%, 1910.

Patented June-13, 1911..

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UNITED b TATES PATENT @FFTQE.

ALFRED TREMBLAY, 0F MANCHESTER, NEW HAMPSHIRE, ASSIGNOR OF ONE-HALF T0OSCAR F. MOREAU, OF MANCHESTER, NEW HAMPSHIRE.

DOOR-LATCH.

Specification of Letters Patent.

Patented June 13, 1911.

Application filed July 18, 1910. Serial No. 572,564.

To all whom it may concern:

Be it known that I, ALFRED TREMBLAY, a citizen of the United States,residing at Manchester, in the county of Hillsboro and State of NewHampshire, have invented certain new and useful Improvements inDoor-Latches, of which the following is a specification.

My invention relates to certain new and useful improvements in doorlatches and locks, and the object of my invention is to produce a latchfor a door which may be operated by a pull from one side of the door anda push from the other side of the door without the necessity of turningany knob or other part as is common practice.

A further object of my invention is to provide a construction in whichthe latch may be locked in its outer position by a key, so that the doorcan not be opened until the latch has been released by the insertion andturning of the key.

A further object of my invention is to provide a device of thischaracter which is simple in construction, composed of few parts and notlikely to get out of order.

With these and other objects in view my invention consists in certainconstructions, combinations and arrangements of parts the preferred formof which will be first described in connection with the accompanyingdrawings and then the invention particularly pointed ,out in theappended claims.

Referring to the drawings wherein the same part is designated by thesame reference numeral wherever it occurs, Figure 1 is a sectional viewof a door provided with a lock constructed in accordance with myinvention, the section being taken on line 1, 1, Fig. 2; Fig. 2 is asection taken on line 2, 2 of Fig. 1, looking in the direction of thearrow; Fig. 3 is a section taken on line 3, 3 of Fig. 1 and looking inthe direction of the arrow; Fig. 1 is a perspective view of the bolt andits actuating slide in separated relation; Fig. 5 is a side view of thelock with one side of the lock casing .removed and the actuating slideshown in section.

6 designates a door of any desired construction and is provided with theusual mortise 7 into which the lock is inserted in the usual manner. Inthe mortise 7 of the door 6 is placed the housing 8 which is re tainedin position in the mortise by means of a front plate 9 in the usualmanner.

10 is a latch, the head 11 of which is adapted to project through anopening formed in the plate 9. This latch is formed with the rearwardlyprojecting portion 12, and on the rear end of the portion 12 is a block13 curved on its forward side to form a cam face 14, and 15 is a guideformed on the inner side of the casing 8 to support and guide the rearend of the latch. The head 11 is also provided with a slot 16 into whichprojects one end of the spring 17, shown as encircling a post 18, andhaving its other end secured in a block 19, projecting from the innersurface of one of the side plates in the casing 8. The spring 17operates to hold the latch in its outward or latching position. 20designates the actuating slide for the latch, said slide passing throughthe door and projecting out from each side thereof. The slide in itscentral portion is provided with a cut-away portion 21, which forms acam face to cooperate with the cam face 14 on the latch to draw thelatch into the casing and against the tension of the spring 17. Theslide 20 is provided at one end with the lip 22 and adjacent theotherend with the projection 23, said parts being adapted to be engaged bythe actuating handles as will be hereinafter described.

In order to firmly hold the actuating slide in position to permit thelatch to stand in looking position I have provided the slide with thecut-away portion 24, in which is mounted a pin 25' surrounded by aspring 26, and 27 is a plate which is provided with an openingsurrounding the pin against which one end of the spring 26 bears, theplate being held against the outer face of the door so that the springwill tend to hold the deep portion of the notch 21 in line with thecamcarrying projection 13.

In order to reciprocate the actuating slide to operate the latch Ipreferably provide a pair of plates 28, 29 which are secured to thefaces of the door on which the slide operating levers or handles arepivoted. Projecting from the plate 28 are three perforated lugs 30through which passes a pin 31 by means of which the operating handle 32is pivoted, the handle being provided with a bifurcated end portionforming the arms 33, 34, which extend between the lugs 30.

Preferably and as shown the perforations 35 in the lugs 30 are elongatedin order to permit of a vertical play of the pivot pin 31. The head 33carries the upwardly proj ecting arm 36 to which is connected one end ofa spiral spring 37, the other end of the spring being connected to theplate whereby the handle 32 will be normally held in the position shownin Fig. 1. The head 34 is formed with an upwardly projecting portion 38which is adapted to strike against an abutment 39 formed on the plate 28to limit the movement of the handle 32 under the influence of the spring37. The head 34 is also extended to form a rounded projection 40,adapted to engage the face of a leaf spring 41 which acts as a cushionin the operating movement of the handle. The head is also provided witha downwardly projecting toe 42 adapted to engage behind the projection23 on the actuating slide 20 to move the slide in the direction of thearrows 43 in Fig. 1, when the actuating handle 32 is pushed toward thedoor.

Projecting from the plate 29 are a pair of lugs 44 between which, bymeans of the pin 45, is provided the head 46 of the actuating handle 47.This head is provided with the upwardly projecting portion 48 betweenwhich and the plate 29 is confined the spring 49, the spring being shownas entering a socket 50 in the plate 29, and a socket 51 in the head 48,whereby the handle 47 will be normally held in the position shown inFig. 1. The head 46 is also extended to form a projection 52 which isadapted to contact with the leaf spring 53 secured at one end to theplate 29. The contacting of the projection 52 with the leaf spring 53acts to cushion the operation of the handle when the handle is pulledaway from the door to operate the latch. The head 46 is also providedwith the downwardly projecting toe 54 which is adapted to engage thehook 22 on the actuating slide to draw the slide in the direction of thearrows 43 when the handle 47 is pulled away from the door.

In order to lock the latch 10 against movement by the handles 32 and 47I provide a block which is adapted to be moved up behind the rear end ofthe latch by a suitable key and thus prevent the reciprocation of thelatch until said block has been withdrawn from the path of the rear endof the latch by the key. This block I have designated as 55, and ismounted between and guided by the rear end of the guide 15 and the backof the casing 8. Projecting downwardly from the block 55 is a yoke shapepart 56, the legs of which straddle the keyhole 57, so that when a keyis inserted through the key-hole and turned in one direction it willengage one of the legs of the yoke to force the yoke upward, and whenturned in the opposite direction will engage the other leg of the yoketo move the yoke outwardly and downwardly. The lower leg of the yoke isadapted to engage a recess 58 formed in the rear plate of the casing 8when the block is in its upper position as shown in dotted lines in Fig.5. In order to force the end of the lower leg of the yoke into therecess 58 to hold the same there and thus hold the block in lockingposition I provide an arm 59 pivoted at 60 and held against the frontface of the yoke by means of a leaf spring 61 secured at one end in theprojection 19 and having its other end in contact with the side of thearm 59.

I realize that considerable variation is possible in the details ofconstruction and arrangement of parts without departing from the spiritof my invention, and I there fore do not intend to limit myself to thespecific form shown and described.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. In a latch for doors, the combination with a door, of a housingmounted therein, a latch slidably mounted in the housing and adapted toproject beyond the edge of the door, an actuating slide mounted at rightangles to the latch and extending beyond each side of the door, twoactuating handles one mounted on each side of the door and adapted toengage the actuating slide to reciprocate the same, and co-acting partson the slide and latch to cause the slide to actuate the latch when theformer is moved in one direction.

2. In a latch for doors, the combination with a door, of a housingmounted therein, a latch slidably mounted in the housing and adapted toproject beyond the edge of the door, a cam face projection carried bythe latch, an actuating slide mounted at right angles to the latch andextending beyond each side of the door, a side face on said slideadapted to engage with the cam face projection on the latch, twoactuating handles one mounted on each side of the door and adapted toengage the actuating slide to reciprocate the same.

3. In a latch for doors, the combination with a door, of a housingmounted therein, of a latch slidably mounted in the housing and adaptedto project beyond the edge of the door, an actuating slide mounted atright angles to the latch and extending beyond each side of the door,shoulders formed adjacent the ends of the slide, two actuating handlespivotally mounted on each side of the door and each provided with aprojecting toe adapted to engage a shoulder on the slide to reciprocatethe same, and co-acting parts on the slide and latch to cause the slideto actuate the latch when the former is moved in one direction by theoperation of either one of the handles.

one mounted on each side of the door and slide and latch to cause theslide to actuate the latch When the former is moved in one direction andkey actuated means to lock the latch against movement.

In testimony whereof I afiix my signature 15 in presence of twowitnesses.

ALFRED TREMBLAY.

4. In a latch for doors, the combination With a door, of a housingmounted therein, a latch slidably mounted in the housing and adapted toproject beyond the edge of the door, an actuating slide mounted at rightangles to the latch and extended beyond each side of the door, twoactuating handles Witnesses:

OsoAR F. MonnAU,

adapted to engage the actuating slide to re- J. B. REJINETAL.

ciprocate the same, co-acting parts on the Copies of this patent may beobtained for five cents each, by addressing the Commissioner of Iatents,Washington, D. G.

